CN219643715U

CN219643715U - Double-air-duct heat radiation structure of generator

Info

Publication number: CN219643715U
Application number: CN202321257295.1U
Authority: CN
Inventors: 杨磊; 许涛
Original assignee: Chongqing Dajiang Power Equipment Manufacturing Co ltd
Current assignee: Chongqing Dajiang Power Equipment Manufacturing Co ltd
Priority date: 2023-05-23
Filing date: 2023-05-23
Publication date: 2023-09-05
Anticipated expiration: 2033-05-23

Abstract

The utility model relates to the technical field of heat dissipation of generators, in particular to a double-air-channel heat dissipation structure of a generator, which comprises a double-sided impeller arranged in a motor connecting cover, a first air inlet arranged on the side wall of a box cover, a second air inlet arranged at a tail cover and an air outlet arranged at the upper end of the box cover, so that double cooling air channels with double cold air sources are formed, and the motor and the box cover in the generator can be directly blown by cold air, thereby improving heat dissipation efficiency. And the guiding structure is arranged at the air outlet to guide the air at the air outlet to the muffler and the exhaust pipe, so that the muffler and the exhaust pipe are cooled by fully utilizing the air quantity of the air outlet. The components in the generator are sufficiently cooled, and the heat dissipation efficiency of other components in the generator is further improved.

Description

Double-air-duct heat radiation structure of generator

Technical Field

The utility model relates to the technical field of heat dissipation of generators, in particular to a double-air-duct heat dissipation structure of a generator.

Background

The generator is mechanical equipment for converting mechanical energy into electric energy, and in the operation process, the generator can generate a large amount of heat, but the service life of the generator can be shortened due to the fact that the temperature of the generator is too high, the operation efficiency can be reduced, the heating value is increased, the temperature of the generator is further increased, vicious circle is formed, and the service life of the generator and the operation safety of the generator are seriously affected.

Therefore, the heat radiation structure is arranged in the generator to timely radiate the heat generated by the generator in the running process. The prior art Chinese patent CN217538831U discloses a generator unit and a generator set, comprising a stator, a rotor and a cooling air duct, wherein the cooling air duct is provided with an air inlet at an inlet end and a drainage fan at an outlet end, the drainage fan is a centrifugal fan and comprises a fan impeller and a fan cover, the radial distance between the inner wall of the fan cover and the fan impeller is gradually increased towards the direction of a fan outlet, and the radial distance is gradually reduced in the opposite direction and is butted to the position of the fan outlet; the flow area of the fan outlet is larger than the flow area of the outlet end entering the drainage fan. The heat dissipation structure improves the heat dissipation efficiency of the motor by improving the cooling fan. The cooling air duct in the heat dissipation structure does not improve the heat dissipation efficiency of other components in the generator.

Therefore, the heat dissipation structure of the generator needs to be improved, and the heat dissipation efficiency of other components in the generator is improved.

Disclosure of Invention

In order to solve the technical problems of the existing generator heat dissipation structure, the utility model provides a double-air-channel heat dissipation structure.

The utility model provides a double-air-duct heat dissipation structure of a generator, which comprises the following specific technical scheme:

the double-air-duct heat radiation structure of the generator comprises a box cover, wherein the box cover is sequentially connected with a motor connecting cover, a motor shell and a tail cover, a first air inlet is formed in the side wall of the box cover, an air outlet is formed in the upper end of the box cover, a double-sided impeller is arranged in the motor connecting cover, a motor is arranged in the motor shell, and a second air inlet is formed in the tail cover.

Further, a guide structure is further arranged at the air outlet.

Further, the outer wall of the box cover is provided with radiating ribs.

Further, the radial distance between the inner wall of the case cover and the double-sided impeller is gradually increased towards the direction of the air outlet.

Compared with the prior art, the utility model has the following beneficial effects: through the double-sided impeller that sets up inside the motor connection lid to and set up first air intake at the case lid lateral wall, tail-hood department sets up the second air intake, and the air outlet that sets up in motor connection lid upper end department, has constituted the double cooling wind channel of double cold air source, makes motor and case lid homoenergetic in the generator obtain cold wind and directly blows, has promoted radiating efficiency. And the guide structure is arranged on the box cover, so that the air at the air outlet is guided to the muffler and the exhaust pipe, and the muffler and the exhaust pipe are cooled by fully utilizing the air quantity of the air outlet. The components in the generator are sufficiently cooled, and the heat dissipation efficiency of the generator is further improved.

Drawings

FIG. 1 is a schematic diagram of a dual cooling duct structure according to the present utility model.

FIG. 2 is a schematic view of a double-sided impeller structure in accordance with the present utility model;

FIG. 3 is a schematic view of the inner wall of the cover and the impeller of the present utility model;

FIG. 4 is a schematic view of a guide structure in accordance with the present utility model;

FIG. 5 is an exploded view of the structure of the present utility model;

reference numerals illustrate:

a case cover 100; a first air inlet 101; an air outlet 102; a guide structure 103; a muffler assembly 104; a motor connection cover 200; a double-sided impeller 201; a first blade 202; a second blade 203; a motor housing 300; a motor 301; tail cap 400, second air intake 401.

Detailed Description

In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description and simplicity of description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model.

In the description of the present utility model, unless otherwise specified and defined, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanical or electrical, or may be in communication with each other between two elements, directly or indirectly through intermediaries, as would be understood by those skilled in the art, and the specific meaning of the terms may be understood as appropriate.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

As shown in the drawings, the utility model discloses a double-air-duct heat dissipation structure of a generator, which comprises a box cover 100, wherein the box cover 100 is sequentially connected with a motor connecting cover 200, a motor shell 300 and a tail cover 400. A first air inlet 101 is provided on a sidewall of the case cover 100. The motor connection cover 200 connects the motor housing 300 and the case cover 100, and a double-sided impeller 201 is provided in the motor connection cover 200, and an air outlet 102 is provided at the upper end of the case cover 100. The motor housing 300 is internally provided with a motor 301. The free end of the motor housing 300 is also connected to a tail cap 400, and a second air inlet 401 is provided on the tail cap 400.

The case cover 100, the motor connecting cover 200, the motor housing 300 and the tail cover 400 form a housing frame structure of the generator, other components such as a motor 301 and an impeller of the generator are arranged inside, and the housing structure can fix and protect inner components of the generator. A heat dissipation structure is arranged in the generator to dissipate heat generated by components of the generator in a heat exchange mode. The heat dissipation structure comprises a double-sided impeller 201 and a heat dissipation air duct, wherein the double-sided impeller 201 is provided with blades on two sides of a wheel disc, and when the double-sided impeller 201 is started, the blades on the two sides of the double-sided impeller rotate simultaneously. The heat dissipation air duct includes a first heat dissipation air duct formed by the first air inlet 101 and the air outlet 102, and a second heat dissipation air duct formed by the second air inlet 401, the motor 301 and the air outlet. And the first heat dissipation air channel is a heat dissipation air channel for cooling the case cover 100, and the second heat dissipation air channel is a heat dissipation air channel for cooling the motor 301.

When the generator is started, the first blades 202 and the second blades 203 of the double-sided impeller 201 also rotate, which is a cold air source of a heat dissipation structure, and the blades on both sides of the double-sided impeller 201 rotate simultaneously, so that a pressure difference is generated between the left side and the right side of the double-sided impeller 201 and air outside the generator shell structure, and the air outside the generator flows through the air duct and then flows out of the air outlet 102. The specific process of cold air flowing through the heat dissipation structure is that the double-sided impeller 201 is started, and the first blade 202 located at the side of the box cover 100 rotates, so that cold air flows into the first heat dissipation air channel at the first air inlet 101 at the box cover 100, heat on the surface of the box cover 100 is taken away by the cold air flowing through the first heat dissipation air channel, and then the cold air flows out of the first heat dissipation air channel from the air outlet 102 arranged at the upper end of the box cover 100. Specifically, the first air inlets 101 are uniformly distributed at the cover 100, so that the surface of the cover 100 can be sufficiently and uniformly cooled. When the double-sided impeller 201 is started, the second blade 203 located at the motor 301 rotates, so that cold air flows into the second heat dissipation air duct at the second air inlet 401 located at the tail cover 400, the motor 301 is located inside the second heat dissipation air duct, and the cold air flows through the motor 301 to take away heat generated by the operation of the motor 301 and flows out of the air outlet 102. Specifically, the second air inlets 401 at the tail cover 400 are uniformly distributed at the tail cover 400, so that the entire motor 301 can be sufficiently and uniformly cooled. Specifically, the height of the first blade 202 on the side close to the case cover 100 of the double-sided impeller 201 is lower than the height of the second blade 203 on the side close to the motor 301 when the double-sided impeller 201 is arranged, and the compactness of the whole structure of the generator is not affected.

Through setting up two-sided impeller 201 and two heat dissipation wind channels and making case lid 100 and motor 301 have cold wind to blow directly for the face that generates heat of case lid 100 and motor 301 can both obtain abundant even heat dissipation, has promoted the radiating efficiency of generator.

Further preferably, in other embodiments of the present utility model, a guide structure 103 is provided on the cover 100. The guiding structure 103 is specifically set as a 20-70-degree oblique angle guiding groove, and guides cold air to blow to the muffler component 103 and the exhaust pipe component of the generator along the guiding structure 103, so that heat on the surfaces of the muffler and the exhaust pipe is taken away, and the surface temperature of the muffler and the exhaust pipe is reduced. Specifically, the cover 100 and the guide structure 103 may be optionally integrally formed. Through setting up guide structure 103 make full use of the amount of wind cooling silencer and blast pipe of air outlet 102 department, improve the radiating effect of generator part, promote generator heat radiation structure's radiating efficiency.

Further preferably, in other embodiments of the present utility model, a heat sink rib may be optionally provided at the outer wall of the case cover 100. The radiating ribs are uniformly arranged on the outer wall of the case cover 100 and used for increasing the contact area between the case cover 100 and the outside air, namely, the heat exchange area between the case cover 100 and the outside air is increased, the radiating effect of the case cover 100 is improved, and the radiating efficiency of the generator is further improved.

Further preferably, in other embodiments of the present utility model, the radial distance between the inner wall of the cover 100 and the double-sided impeller 201 may be set to gradually increase toward the air outlet 102. The inner wall of the case cover 100 corresponds to a fan cover for cooling the blades of the motor 301, the blades and the fan cover form a centrifugal fan for cooling the motor 301, and the fan outlet is the air outlet 102. Specifically, the outer diameter of the blade is unchanged, the inner wall of the case cover 100 is gradually changed, that is, the inner wall of the case cover 100 is expanded outwards along the radial direction of the blade in a curve shape, gradually increases along the rotating direction of the blade, and forms a curve-shaped inner wall, and the curve is preferably an involute curve, so that the flow passage of air in the fan gradually increases. The flow speed of cold air of the cooling motor 301 in the second cooling air channel is increased, and the cooling efficiency of the cooling structure is further improved.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. Double-air-duct heat radiation structure of generator, its characterized in that: including case lid (100), motor connecting lid (200), motor housing (300) and tail-hood (400) are connected gradually to case lid (100), wherein are provided with first air intake (101) on case lid (100) lateral wall, and case lid (100) top is provided with air outlet (102), is provided with two-sided impeller (201) in motor connecting lid (200), is provided with motor (301) in motor housing (300), and tail-hood (400) department sets up second air intake (401).

2. The dual duct heat dissipation structure of a generator of claim 1, wherein: the air outlet (102) is also provided with a guide structure (103).

3. The dual duct heat dissipation structure of a generator according to claim 1 or 2, wherein: and the outer wall of the box cover (100) is provided with radiating ribs.

4. The dual duct heat dissipation structure of a generator according to claim 1 or 2, wherein: the radial distance between the inner wall of the box cover (100) and the double-sided impeller (201) gradually increases towards the air outlet (102).

5. A dual duct heat dissipation structure for a generator as defined in claim 3, wherein: the radial distance between the inner wall of the box cover (100) and the double-sided impeller (201) gradually increases towards the air outlet (102).